After reading through this discussion and all of the praise for the CPT, I thought I would give one a shot. Honestly I did not think it would do much for my system. I already had a Shunyata Anaconda, Shunyata Hydra 6 as well as Triode Wire Lab cables throughout, but thought that maybe running a CPT in to my Hydra 6 may help.
After contacting Mark I had him help me out on what size CPT I needed to plug in to the Hydra 6 to run my front end(Ayre KX-5 Twenty Preamp, Oppo105, Classe SSP800, DirecTV and Xbox one). He was incredibly helpful and even responded back to my emails on Sunday, even though I insisted it was fine to get back to me on Monday. We settled on the CPT300, which I received a week later.
Right out of the box I really did not expect to hear much a difference and, even if I ever did, the differences would be very subtle. All I can say is, "WOW". Seriously, everyone is right when they say that the backgrounds are blacker and you are able to hear things you have not heard before. After listening to the same songs probably hundreds of times before I was surprised to hear new things and a real separation between the instruments. What everyone has not mentioned is how much deeper the soundstage became. At least on my system it became much more 3D than it has ever been.
I did not believe a powercord could make that much of a difference, but I was wrong. Very happy!